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Popular >

expand (n+5)^3

Solution

expand

(n + 5)^{3}

Solution

n^{3} + 15 n^{2} + 75 n + 125

Solution steps

(n + 5)^{3}

Apply Perfect Cube Formula:

(a + b)^{3} = a^{3} + 3 a^{2} b + 3 a b^{2} + b^{3}

(n + 5)^{3} = n^{3} + 3 n^{2} \cdot 5 + 3 n \cdot 5^{2} + 5^{3}

= n^{3} + 3 n^{2} \cdot 5 + 3 n \cdot 5^{2} + 5^{3}

Simplify

n^{3} + 3 n^{2} \cdot 5 + 3 n \cdot 5^{2} + 5^{3} : n^{3} + 15 n^{2} + 75 n + 125

= n^{3} + 15 n^{2} + 75 n + 125

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90 \div 9

Frequently Asked Questions (FAQ)

What is expand (n+5)^3 ?
The solution to expand (n+5)^3 is n^3+15n^2+75n+125